The Credit Registry and Money Registry and Free Swaps Registry are links at the top of your My Account page, which allow you to see your Book Credit, PBS Money and Free Swaps activity for the last 2 months.  You can see which books are involved on most entries. 

This feature became available at PBS on 9/5/2007. The Free Swaps Registry was added on 2/15/2015.

Common notations (and their meaning) include:

Requested a Book = you requested a book

Mailed a Book = a book you mailed was received by another member OR Quick Credit was granted when the DC barcode scan information was uploaded to PBS.

Canceled Request = a book request was canceled, either by sender or requestor

Referred a New Member = you got credit for referring someone who Posted at least 10 books

Friends Credit Transfer = someone gave you credits; or you gave credits to someone else

Canceled Book Received = you marked a canceled book received from your Transaction Archive

lost in mail Book Received = you marked a lost book received from your Transaction Archive

Initial credit = one of the two "startup" credits given by PBS for posting books

Bought Credits = you purchased Book Credits in the Kiosk (or by sending in a snail-mail check or money order)

Bought PBS Money = you purchased PBS Money in the Kiosk (or by sending in a snail-mail check or money order)

Postage = postage was printed out onto a wrapper

Postage Printing fee = the postage fee for using Printed Postage was charged. If this is noted as 0.00, that means you got your courtesy waiver (once each calendar month for Standard Membership, once each quarter for Limited Membership).

Purchased DC for a BoB = You printed a Box-O-Books wrapper with PBS Delivery Confirmation

Request Refund = a sender refunded your credit from a swap

Request Canceled - No response from Sender = this means the sender didn't mark the book mailed, and the request was canceled.  This is accompanied by a green 1, indicating that the credit was taken back from this request.

Passed on Request -1 with Canceled by sender +1  = These always appear together. This means that a request was either canceled by the sender or the system canceled it when it "timed out" and expired, and the request has been passed to a new sender.  "Passed on Request -1 " ALWAYS appears with a positive "Canceled by Sender +1" notation. Because -1 plus +1 = 0, that means that your account balance is not affected by the passing along of the request.  The notation above has an associated credit change is 0 (zero).  That is because the credit that was already deducted when the first request was created is simply moved to the new request -  you do not get credit back or have a second credit deducted when a request is passed along by the system.

PBS Market Purchase -1 = this means you purchased a book from the Market and used a Book Credit to defray the cost.

Free Swap for Printable Postage = this means that you mailed a shipment with Printable Postage, earning a Free Swap (the Free Swap allows you to request a book in future without paying a Swap Fee).

Related items:

What is PBS Money?

FAQs about Printable Postage
What is a 'Free Swap'?